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The average income tax refund for the 2009 tax year was $2945. Assume the refund per person follows the normal probability distribution with a standard deviation of $955. Complete parts a through d below CEED a. What is the probability that a randomly selected tax return refund will be more than $2400? 0.7157 (Round to four decimal places as needed.) b. What is the probability that a randomly selected tax return refund will be between $1400 and $26007 0.3868 (Round to four decimal places as needed) c. What is the probability that a randomly selected tax return (Round to four decimal places as needed.) eturn refund will be between $3100 and $45007 o

The average income tax refund for the 2009 tax year was $2945. Assume the refund per person follows the normal probability distribution with a standard deviation of $955. Complete parts a through d below CEED a. What is the probability that a randomly selected tax return refund will be more than $2400? 0.7157 (Round to four decimal places as needed.) b. What is the probability that a randomly selected tax return refund will be between $1400 and $26007 0.3868 (Round to four decimal places as needed) c. What is the probability that a randomly selected tax return (Round to four decimal places as needed.) eturn refund will be between $3100 and $45007 o

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 22PFA
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The average income tax refund for the 2009 tax year was $2945. Assume the refund per person follows the normal probability distribution with a standard deviation of $955. Complete parts a through d below a. What is the probability that a randomly selected tax return refund will be more than $2400? 0.7157 (Round to four decimal places as needed.) b. What is the probability that a randomly selected tax return refund will be between $1400 and $28007 0.3868 (Round to four decimal places as needed.) c. What is the probability that a randomly selected tax return refund will be between $3100 and $45007 (Round to four decimal places as needed.)
Transcribed Image Text:The average income tax refund for the 2009 tax year was $2945. Assume the refund per person follows the normal probability distribution with a standard deviation of $955. Complete parts a through d below a. What is the probability that a randomly selected tax return refund will be more than $2400? 0.7157 (Round to four decimal places as needed.) b. What is the probability that a randomly selected tax return refund will be between $1400 and $28007 0.3868 (Round to four decimal places as needed.) c. What is the probability that a randomly selected tax return refund will be between $3100 and $45007 (Round to four decimal places as needed.)
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